I play minecraft with my son, who's 10, but it doesn't appeal to me that greatly beyond playing with him. Dwarf Fortress and Crawl, on the other hand, can end up sucking hours of my day if I'm not careful.
The great thing about roguelikes is that you can only play them so long before you decide to make a random map generator, and then a line of sight algorithm, and implement A* pathfinding and suddenly you're making your own.
